Vehicle and method of identifying passenger of the same

A method of identifying a passenger sitting on a seat of a vehicle, comprising:

• sensing, by a weight sensor, a weight of the passenger in the seat;
• measuring, by a weight-keeping-exerted time measurer, a weight continuance time which measures a duration of the sensed passenger's weight being exerted;
• setting, by a passenger identification unit, a class of the seat by using the weight of the passenger sensed by the weight sensor and the weight continuance time;
• sensing, by a seat belt-fastening sensor, whether a seat belt in the vehicle is fastened after said setting the class;
• changing, by the passenger identification unit, a critical value that is a reference for setting the class when the seat belt-fastening sensor senses that the seat belt is fastened;
• after said changing a critical value, measuring, by a door-keeping-closed time measurer, a door closing continuance time which measures the duration of a door being closed;
• measuring, by a seat belt-keeping-fastened time measurer, a fastened time that the seat belt has been fastened when the door closing continuance time measured by the door-keeping-closed time measurer is greater than a reference closing continuance time;
• initially fixing the set class by the passenger identification unit, when the fastened time measured by the seat belt-keeping-fastened time measurer is greater than a reference fastening time;
• after said initially fixing the set class, sensing a traveling speed of the vehicle by a vehicle speed sensor;
• and
• finally fixing the set class by the passenger identification unit when the traveling speed of the vehicle is greater than a fixed reference speed, wherein,
• said step of setting the class of the seat is restarted when the door closing continuance time is less than the reference closing continuance time, and
• said step of setting the class of the seat is restarted when the fastened time is less than the reference fastening time.